[PATCH] Race in pipe code

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Hi,

I can prove the race now (sample code attached) and I have a patch that fixes
it for me. If noone sees problems with the patch I'll send it to Linus.
The patch was developped for 2.3.99-pre9 but it applies cleanly against
2.4.0-test4.

The nice(20) in the test program isn't needed, it just helps to trigger the
race. About 50% of the time the program prints BBBBBBBBBB on stderr and
4000(!) A's on stdout which is clearly wrong. The patch basically makes
sure that the same reader continues to read from the pipe after it went
to sleep.

    regards Christian

-- 
THAT'S ALL FOLKS!

• text/plain attachment: ptest.c

• text/plain attachment: 2.3.99-pre9-pipe

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• Next message: Andre Hedrick: "Re: IDE read problem with ht6560a fixed in ide- patches only"
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• In reply to: Christian Ehrhardt: "Possible race in pipe code"
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